#!/usr/bin/env python
# -*- coding:utf-8 -*-
import random
from django import forms
from django.core.validators import RegexValidator
from django.core.exceptions import ValidationError
from django.conf import settings
from django_redis import get_redis_connection
from web import models
from utils.tencent.sms import send_sms_single
from utils import encrypt
from web.forms.bootstrap import BootStrapForm

class RegisterModelForm(BootStrapForm,forms.ModelForm):
    password = forms.CharField(
        label='密码',
        min_length=6,
        max_length=64,
        error_messages={
            'min_length': "密码长度不能小于6个字符",
            'max_length': "密码长度不能大于64个字符"
        },
        widget=forms.PasswordInput()
    )
    confirm_password = forms.CharField(
        label='重复密码',
        min_length=6,
        max_length=64,
        error_messages={
            'min_length': "重复密码长度不能小于6个字符",
            'max_length': "重复密码长度不能大于64个字符"
        },
        widget=forms.PasswordInput())
    mobile_phone = forms.CharField(label='手机号', validators=[RegexValidator(r'^(1[3|4|5|6|7|8|9])\d{9}$', '手机号格式错误'), ])
    code = forms.CharField(
        label='验证码',
        widget=forms.TextInput())
    class Meta:
        model = models.UserInfo
        fields = ['username', 'email', 'password', 'confirm_password', 'mobile_phone', 'code']



    def clean_username(self):
        username = self.cleaned_data['username']
        exists = models.UserInfo.objects.filter(username=username).exists()
        if exists:
            raise ValidationError('用户名已存在')
        return username

    def clean_email(self):
        email = self.cleaned_data['email']
        exists = models.UserInfo.objects.filter(email=email).exists()
        if exists:
            raise ValidationError('邮箱已存在')
        return email

    def clean_password(self):
        pwd = self.cleaned_data['password']
        # 加密 & 返回
        return encrypt.md5(pwd)
    def clean_confirm_password(self):
        pwd = self.cleaned_data.get('password')
        confirm_pwd = encrypt.md5(self.cleaned_data['confirm_password'])
        if pwd != confirm_pwd:
            raise ValidationError('两次密码不一致')
        return confirm_pwd

    def clean_mobile_phone(self):
        mobile_phone = self.cleaned_data['mobile_phone']
        exists = models.UserInfo.objects.filter(mobile_phone=mobile_phone).exists()
        if exists:
            raise ValidationError('手机号已注册')
        return mobile_phone

    def clean_code(self):
        code = self.cleaned_data['code']
        mobile_phone = self.cleaned_data['mobile_phone']
        conn = get_redis_connection()
        redis_code = conn.get(mobile_phone)
        if not redis_code:
            raise ValidationError('验证码失效或未发送，请重新发送')
        redis_str_code = redis_code.decode('utf-8')
        if code.strip() != redis_str_code:
            raise ValidationError('验证码错误，请重新输入')
        return code

class SendSmsForm(forms.Form):
    mobile_phone = forms.CharField(label='手机号', validators=[RegexValidator(r'^(1[3|4|5|6|7|8|9])\d{9}$', '手机号格式错误'), ])
    def __init__(self,request,*args,**kwargs):
        super().__init__(*args,**kwargs)
        self.request = request

    def clean_mobile_phone(self):
        '''手机号验证钩子'''
        mobile_phone = self.cleaned_data['mobile_phone']

        # 判断短信模板是否有问题
        tpl = self.request.GET.get('tpl')
        template_id = settings.TENCENT_SMS_TEMPLATE.get(tpl)
        if not template_id:
            raise ValidationError('短信模板错误')

        # 校验数据库中是否已有手机号
        exists = models.UserInfo.objects.filter(mobile_phone=mobile_phone).exists()
        if exists:
            if tpl == 'register':
                raise ValidationError('手机号已存在')

        code = random.randrange(1000,9999)
        # 发送短信
        sms = send_sms_single(mobile_phone,template_id,[code,])
        if sms['result'] != 0:
            raise ValidationError('短信发送失败,{}'.format(sms['errmsg']))

        # 验证码  写入radis(django-radis)
        conn = get_redis_connection()
        conn.set(mobile_phone,code,ex=60)

        return mobile_phone

class LoginSmsForm(BootStrapForm,forms.Form):
    mobile_phone = forms.CharField(
        label='手机号',
        validators=[RegexValidator(r'^(1[3|4|5|6|7|8|9])\d{9}$', '手机号格式错误'), ])
    code = forms.CharField(
        label='验证码',
        widget=forms.TextInput())

    def clean_mobile_phone(self):
        mobile_phone = self.cleaned_data['mobile_phone']
        exists = models.UserInfo.objects.filter(mobile_phone=mobile_phone).exists()
        if not exists:
            raise ValidationError('手机号不存在')
        return mobile_phone

    def clean_code(self):
        code = self.cleaned_data['code']
        mobile_phone = self.cleaned_data.get('mobile_phone')
        # 手机号不存在 则验证码无需在校验
        if not mobile_phone:
            return code
        conn = get_redis_connection()
        redis_code = conn.get(mobile_phone)  #根据手机号获取验证码
        if not redis_code:
            raise ValidationError('验证码失效或为发送，请重新发送')

        redis_code_code = redis_code.decode('utf-8')
        if code.strip() != redis_code_code:
            raise ValidationError('验证码错误，请重新输入')
        return code

class LoginForm(BootStrapForm,forms.Form):
    username = forms.CharField(label='邮箱或手机号')
    password = forms.CharField(label='密码',widget=forms.PasswordInput(render_value=True))
    code = forms.CharField(label='图片验证码')

    def __init__(self,request,*args,**kwargs):
        super().__init__(*args,**kwargs)
        self.request = request

    def clean_password(self):
        pwd = self.cleaned_data['password']
        # 加密 & 返回
        return encrypt.md5(pwd)

    def clean_code(self):
        # 钩子 图片验证码是否正确
        code = self.cleaned_data['code']
        # 去session中获取自己的验证码
        session_code = self.request.session.get('image_code')
        if not session_code:
            raise ValidationError('验证码已过期，请重新获取')
        if code.strip().upper() != session_code.strip().upper():
            raise ValidationError('验证码输入错误，请重新输入')
        return code

class ProjectForm(forms.ModelForm):
    class Meta:
        model = models.Project
        fields = '__all__'

    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'
